Drag roll for looms



Aug. 7, ms.

s A. 431M A n u Vv um h James H. HooK y J. H- HOO$ DRAG ROLL FOR LOOMSFiled Oct. 18. 1922 Patented Aug. 7, i923.

UNEE STT attain are .rica.

JAMES HENRY HOOK, 0F CORSICANA, TEXAS, ASSIGNOB TO DRAPER CORPORATION,OFHOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

DRAG ROLL r03. Looms.

Application filed October 18, 1922. Serial No. 595,275.

T 0 all 10 7mm may concern Be it known that I, JAMES H. IIOOK, a

citizen of the United States, and resident ofv Corsicana, county ofNavarro, State of Texas, have invented an Improvement in Drag Rolls forLooms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing.representing like parts.

This invention relates to an improved drag roll construction for looms.

The object of the invention is to provide a construction which \villtake care of the lint, dirt, broken ends and foreign substances shedfrom the warp sheet after its passage over the drag roll and preventtheir deleterious accumulation on the warp or at points in the loom notreadily accessible for cleaning.

These and other objects and features of the invention will appearmorefully from the accompanying description and draw ings and will beparticularly pointed out in the claims. I

In the drawings:

Fig. 1 is a side elevation of a portion of a loom embodying a preferredform of the present invention;

Fig. 2 is a detail in perspective of a portion of the drag roll shown inFig. 1.

It is universal in looIns for the warp sheet after it leaves the warpbeam to pass over a guide, whip, or drag. bar or roll on its way to formthe shed. This device acts to spread the warp sheet out in proper formand to apply a drag or tension necessary in the weaving operation. Thereare various forms of. these devices but this invention is particularlyconcerned with that form in which the device is permanently secured in abracket so that the warp sheet in its passage from the warp beam to theshed is dragged over its peripheral surface.

As the invention relates only to this particular feature of the loom itis necessary to illustrate and describe the construction of the loomonly in so far as it is particularly concerned with this feature.

In the construction illustrated the loom sides 1, a portion of one ofwhich is illustrated, support in bearings 2 the journals 3 of the usualwarp beam 4;. Brackets, one Of which 5 is shown, attached to the loom.

sides 1 serve as supports for the drag roll.

In the construction illustrated two drag rolls are shown, namely themain drag roll 6 and a smaller auxiliary drag roll 7 The sheet of Warp 8as it leavesthe warp beam 4 passes up and around the drag roll 7 andthen down and around the drag roll 6 and then forward to the usual rods9 on its way to form the shed.

Heretofore in this type of construction both drag rolls have been solid.The warp forming the sheet is generally sized and, owing to the bendingand rubbing of the warp as it passesaround and over the drag rolls, thissize together with short fibres, lint dirt and other foreign substancesfalls or is shed or drops off in front of the main drag roll and behindthe auxiliary drag roll to a very considerable extent. These sub stancesaccumulate on the warp sheet directly in frontof the main drag roll andare carried around by the warp over the main drag roll. The, resultis toplace an undue strain upon the warp, causing excess breakage tothe warp.Often lumps accu- .mulate, become attached to the warp and accessibleand particularly so when an auxiliary drag roll, such as illustrated, isemployed. A large amount of time is, therefore, lost in stopping theloom and in cleaning out this accumulation by hand.

Further in some types of looms and in weaving certain forms of fabric itis undesirable. to use a warp stop motion. Consequentlywhen a warpbreaks the end is, in such cases, frequently caught by the warp sheetand dragged around; the drag roll causinga defect in the cloth andrequiring the loom to be stopped and the accumulation on the drag rollremoved. Thisis particularly true in the weaving of such c l oth as duckwhere the warps are comparatively short and it is more economical tooperate the looms without the drop'wires required by a warp stop motionbecause of the time required to draw the warp through the drop comprisesa hollow metal cylinder. This cylinder is rigidly secured in place atits ends in seatslO, formed in the ends of the brackets 5, by suitablebolts or screws 11. v The warp sheet 8 is guided around a segment oftheperiphery of this metal cylinder. The extent of the cylinderperiphery engaged by the warp-sheet depends upon the guiding devicesemployed. With theiauxiliary drag roll 7 it will be seen that thissegment comprises nearly three fourths of the cylinder periphery.

QBeneath the warp sheet Where it, runs horizontally forward from thedrag roll to the shed there is formed in the remaining segment of thedrag roll a longitudinal opening 12 extending parallel to the axis ofthe roll and throughout the Width of the warp sheet. In front of thisopening is located a scraper blade 13 also extending parallel to theaxis of the roll and having its upper edge in position to engage andscrape. the bottom of thewarp sheet.

' Preferably the opening, 12 and blade 13 are, formed, as shown inFigure 2, by strik- I ing up the blade from the metal wall of the stancefalling from the warp sheet "as it leaves the drag roll is now directedthrough cylinder and thus leaving the opening 12.

Any size, lintjdiit or otherforeign subthe'opening 12 into theinteriorof the roll and in addition the scraper blade acts positivelytoremove these substances from the warp sheet and dlrect them throughthe opening 12 into the roll interior. In addi' ti'on if a warp endbreaks it is forcedby this construction to remain on topof the warpsheet where'the weaver can readily see it and stop the loom before itcauses damage.

I The size, lint, dirt or other foreign substance which graduallyaccumulates in the hollow drag roll'interior is readily remov able fromeither end of the roll by the oper- 'ator because access may freely behad to both ends ofthe roll. I There 's thus presented by this inventiona simple and effective construction for eliminating the difficultiesheretofore 'en counteredin this feature of the loom.

I; Letters Patent is:

"Having fully described my. invention, what I claim-as new and desire.to secure by 1. A drag roll for a 100m comprising a .ihollow metalcylinder having a blade proexteriorly from the cylinder peripheryparallel to its axis and having a longitudinal opening through thecylinder wall adjacent the base of the blade whereby beneath and inengagement with the Warp sheet, lint, dirt and foreign substancesfalling from or scraped by the blade from the when the drag rollis'placed in the loom with the blade 1 extending transversely-of,

warp sheet are directed through the openings into the roll interior.

2. A drag roll for a loom comprising a hollow metal cylinder having ablade struck u from its wall and projecting exteriorly of the cylinderperiphery parallel to its axis and having a longitudinal. openingthrough the cylinder wall adjacent the base of the blade whereby whenthe drag roll is placed in the loom with the blade extendingtransversely of, beneath and in engagement with the warp sheet, lint,dirt and foreign sub.-

stances falling from or scraped by the blade from the warp sheet aredirected through the openings into the roll interior.

3. In a loom a hollow drag roll over a segment of which the warp sheetis dragged in its passage from .the warp beam to the shed, the said rollpresenting beneath the warp sheet in the remaining segment alongitudlnal openlng to receive lint, dirt and foreign substances.

4. In a 100m a hollow drag roll over a segment of which the warpsheet'is dragged in its passage from the warp beam to the shed, thesaidrollpresenting beneath. the warp sheet in the remaining segment alongitudithe said roll'having a portion of the remain ing segment formedto present beneath the warp sheet a longitudinal opening and a scraperblade, the sa d blade acting to assist 1n removing-from the warp sheetand incirectin through the opening into the roll interior int, dirt andforeign substances. C

In testimony whereof, I have signed my name to this specification.

JAMES noon.

